1. R. J., Davey: Dinocyst stratigraphy of the latest Jurassic to Early Cretaceous of the Haldager No. 1 borehole, Denmark, Danmarks Geologiske Undersogelse, Serie B, 6, 1-57, 1982.
2. W. R., Evitt: Sporopollenin Dinoflagellate Cysts: Their Morphology and InterpretationAASP Foundation, Austin, Texas, 1–333., 1985.
3. K. W., Glennie: (Ed.) Introduction to the Petroleum Geology of the North SeaBlackwell, Oxford, 1–278., 1986.
4. C., Heilmann-Clausen: Lower Cretaceous dinoflagellate biostratigraphy in the Danish Central Trough, Danmarks Geologiske Undersøgelse, Serie A, 17, 1-89, 1987.
5. J. K., Lentin and G. L., Williams: Fossil dinoflagellates: index to genera and species, 1989 Edition, AASP Contributions Services, 20, 1-473, 1989.